#字典的基本操作
d1={"gansu":"兰州","ningxia":"银川","qinghai":"西宁","shanxi":"西安"}
print(d1)
print("------------字典的键的输出----------------")
for key in d1.keys():
          print(key)
print("------------字典的值的输出----------------")
for value in d1.values():
          print(value)
print("------------字典的键的输出----------------")
for item in d1.items():
          print(item)
